From: Dmitry Chistikov <dd1email@gmail.com>
To: ALT Linux Sisyphus discussions <sisyphus@lists.altlinux.org>
Subject: Re: [sisyphus] Q: Device data reading by several processes
Date: Fri, 22 Jan 2010 12:04:23 +0300
Message-ID: <2876aabc1001220104r130ec6f7l204b2d4a513027d6@mail.gmail.com> (raw)
In-Reply-To: <m37hrbnd2q.fsf@blard.localdomain>
В случае каналов, fifo и терминалов POSIX ничего не гарантирует:
$ man 3p read | grep -B1 concur
The read() function shall attempt to read nbyte bytes from
the file associated with the open file descriptor, fildes, into the
buffer
pointed to by buf. The behavior of multiple concurrent reads on
the same pipe, FIFO, or terminal device is unspecified.
Насколько я понимаю, в общем случае определенности нет и все зависит
от устройства. (Прошу меня поправить, если ошибаюсь.)
--
Дмитрий Чистиков,
dd1email at gmail dot com
next prev parent reply other threads:[~2010-01-22 9:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-22 1:27 Michael Pozhidaev
2010-01-22 9:04 ` Dmitry Chistikov [this message]
2010-01-22 11:34 ` Sergey Vlasov
2010-01-22 13:11 ` Michael Pozhidaev
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